1780c - 1800c pewter mold help? Candle corrosion

[ClovenHomeAndHearth]

Hello, I am using a antique 30 hole pewter and pine wood mold. I noticed that the very bottom of the tip of the mold is starting to corrode inside and making the tip of my candles not so pretty. I am using hot soap and water to clean it and a silicone mold releasing spray.. is the spary braking down my mold? Also dose anyone know how to clean out the corrosion?.. or did I ruin it? ;(

 

[lionprincess00]

Not sure, but wasn't pewter manufactured before the early 1900s made with lead? Wouldn't that be a poor choice for potential lead poisoning? Not sure how much would leak into the wax and transfer to hands while handling, but I wanted to ask because it seems potentially dangerous.